The city of Santa Clara doesn’t need another audit of Levi’s Stadium, as Mayor Lisa Gillmor has suggested. It needs a businesslike, professional relationship with the 49ers, who manage the stadium that substantially benefits the city as well as the team owners.

The Santa Clara City Council paid $200,000 for a stadium audit by Harvey M. Rose that began a year ago. The 169-page final report does not show the thievery Gillmor has implied. But it does spotlight differences that reasonable people could resolve.

Before considering paying for another audit, the city should get its own house in order. It needs full-time professional staff with experience in stadium oversight to resolve the problems and, in essence, re-establish diplomatic relations with its stadium managers.

In a hopeful move, the council on Tuesday hired a new city manager — Deanna Santana, most recently manager of Sunnyvale. She needs the authority to rebuild dismal morale among city staff and to professionalize dealings with the stadium.

For a start, the city’s Stadium Authority, which consists of the city council, needs expert staff. Santana says she intends to make an offer to Scott McKibben, CEO of the Oakland-Alameda County Coliseum Authority since 2015 and previous head of the Rose Bowl renovation project.

At Thursday’s council meeting, both the audit and the other major sticking point in stadium relations, the council’s ridiculous 10 p.m. weeknight curfew for big-name concerts, will be discussed.

An earlier draft of the audit released in May said the 49ers owed the city $424,349 for police and firefighter staff time for stadium events. But the final report pared that back to $114,781 — and the 49ers say they have not been billed for those expenses.

The final audit also finds that $894,228 in public safety costs were paid with stadium construction funds. Gillmor argues that was illegal, but the city’s chief finance officer at the time, Gary Ameling, had authority to approve the expenditure and did so. Ameling is among a number of professionals who have fled Santa Clara in recent years, decimating what was a highly respected city staff when voters approved building the stadium.

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A third issue raised by the final audit report is the city’s questionable position that the 49ers owe the city more than $700,000 because the city’s golf course revenues fell short as a result of the stadium’s use of the course for parking cars. The issue is likely headed for the courts, but could be resolved quickly with a more reasonable approach.

The city council has a choice Thursday. It can escalate its fight with the 49ers by ordering another audit and by refusing to extend the curfew for the October Coldplay concert, endangering the stadium’s potential as a concert venue.

Or it can give Santana and the staff she assembles the authority and some time to resolve these issues, determine whether contracts need to be tweaked and generally de-toxify the relationship.

Why not try? Things really can’t get worse.

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